<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        body{
            background-color: red;
        }
        .box{
            width: 300px;
            height: 300px;
            margin: 10px auto;
            border: 10px solid hsla(0, 0%,100%, .5);
            background-color: #333;
            background-clip:padding-box;
        }
    </style>
</head>
<body>
    <div class="box">

    </div>
</body>
</html>